Switching socket



W. LESCHMAN.

' swx'rcnme SOCKET Filed Nov. 12, 1925 Patented Oct. 4; 1927.

WILLIAM 'LEscHMAiI, on CHICAGQILLINOIS, Assmnon :TO CHICAGO ELECTRIC MANU- FACTURING 00., F oHIoAeo', ILLINOIS, aconPoRA'rroit o a' ILL N IS. f

'- swir'cnrne sookET."-

Application filed l l'ovembr 1925. -SeriaI-No. 68,724;

, My invention relates toglamp sockets in which the circuit is switched on andottby 'rot'ationalmovements of a handle pro ecting 1y vsimple, inexpensive, easily wired and easily assembled socket of this class; a

More particularly my invention provides a switching socket in which the conductors engaging the lamp bulb terminals are mountedin an insulator which is slidably insertible in the shell of the socket and in which the rear end of the shell normally ex 'tends into a handle adapted to be attached ing washer'suitably distributes the pressure; of the spring so as to hold the said; oon .7 ductor firmly engaged or detached from the shell without theuse V 7 of-tools; in whichthecircuit wires can read? V ily 'be attached to the saidconduotors before the insulator [is slid into the shell; in which these wires extend through a handle carrying a pin or' the-likeiwhich serves both forlocking gthe insulator against rotation with respect to the handle and for-interlock- 5 its circuit-closing or, its circuit-opening' position; in which simple spring means cooperate with other features of'construction in resingle spring insertible from the forward end of the 'handleaftordssuch spring; means, and in which as1m1larlj1nsert1ble insulatwith fthe terminals 0t thelampbulb.

'Moreover,-my invention providesa switch I 1 ing socket of the said general typesuitable ;for use withareflector and requiring only a the suitably-notched metal shell of the socket to be secured to the reflector, while all of the otherparts are manually attached to; and-detachable formythissocket shell." 7 l still further and also more detailed objects will appear from the following specification i and from the accompanying drawings,

fwhich a ,4 lamp including a switching socket embodyand longitudinal section through als'pot ling my, invention I V Fig. 2--='1s an enlargement otfthe central- V port-ion of Fig.;1,{with the socket? shell and the pressure-distributing insulatingwasher 'minals also in section. from the rear end'of the socket; its general objects being those' ofproviding an unusualj Fig. 7 is'a perspective viewofthe body bracket; I

Extending into thiscollar 6. from the rear? thereof 1s a cylindrical socket shell :8 *pro- Fig. 1 is a fragmentary 'centrahvertical' in central section, andwith a portionof the main insulator and of one; of'the iwire terj Fig. 3. isfan, enlarged e socket shell aloi1e.- i

washeni f f F Fig. 6 is a 1 reduced" transverse section taken: through Fig. 2 along the line 66. a

member of the socket.

Intheillustratedembodiment;I mam '7 ing my switching socket as usedin connec-.

.tion with a double-pole .la'mprbulb ,1 having two termmalsQrand- 3Hexposed' at they-rear 5 send th s bulb? having *ltSi major -portion',

housed by a lamp. housing which: includes-Ia frontal lens" tend a rear reflector 5,

ation' of. the

-m-mi zzeot Fig. 4 1s a front elevationof the insulating j ERIC f 7s kClinchedto the'reflectorat its usual axial perforation and in axialzalineme'nt i with this big thehandle withthe socket shell in either;

perforation is a supportingficollar6- which a ektend s through theclampifof ai supporting vided at it its forward cl end with *lthe lusual bayonet' slots torfinterlocking with V the usual lateral pins=-10 on the base ofjthe lamp bulb; this shell and thecollateorbeing-ibothl'f:

held in-fixedk-positi'ons with respect to the supporting-bracket by a screw-ll which-is .Slidably inserted :into the-socket shell 6 -v from the rear ther'eof'is an insulating body fwhich includes an insulating-1icylinder 12 slightly'smaller in diameter than the boreot the. shell '6 andhaving' a longitudin l g v 1 31 on "one I side as shown fin'jFig. i 7. Mounted in this insulating cylinder and v proj ec'ting.

slightly beyond the forward endthereof are wo wire terminals orconductors'13 and 14;

'eachot which is "disposed in bore extending V longitudinally through "this "insulator," and each of'which hasits rear end bored out for. 7

receiving the end'ot'oneof thecircuit wirespj Wire bindingscrews' 15'and 'l6extend transversely of the insulator respectively through the said bored ends of the two conductors as 1 shown in Fig. 8, so I asg-tl'o secureithe circuit wires17; and respectively to two con- 1 '20 fleadingllbngitudinally of the shel l to the" for admittihg apin projects so; the pihfcah eiitef thepltr a i reverse islet 119i iil to j which it 1101 11131 15 extends," vilh-ls pm tama sp 7, v k,

ween this lining an'dl'thejnsulatopfiyflfmterdhdithe sp'rin g; an 1 11- w ashenflie "Thegwasher 25511213 2 '2theihwardlyj plrdjeetihgapoiftion abtlie gmmwh n insettixigejt in' t heihendle 'withixnthefha'ndle e M11 q ippe e ith wenfieressibtfm; wimwemaneimhat dt ga into the fentrariemlot 20, f'so;

loosfi sothat the letter can be. taken.

the handlei d r a t nix git e .7

socket m de of Mood- 11 line the hahdle i; "with a vvt1lloul'eni V irieta'lz'lining 24, and Q to y iiaIis'pri-ngfmm: jamming; b'e-f n h perferations jthigeu'gh which the} ie 111- arths-mum? 116m be i-a-rwald ly draivvnwofi j {j 1.;,' F r 1ise with a lamp cbulb hztvingjtwd termlnals (mjtshaseencl g switching sqeket I V eomprisi ng'af tuhula hell previded;.at"its I rw rd i iiwit m ans f i'interlo ng-i VT sheHq 1 Thisffleaves the-i maihi'fisu? V timetemileme mhm itjtetheends I o iljt ra'eted -reaIQ endf 1 :ghmn mheperibtatien 26 in t sedwug. hi iid th hand efree -i women an ,leibyi thbfi vs e conductors extending longitudinally of the, V

1 insulator, through the letter, thezv' ihsullator Y g i g longitudinal groove-1 on Qu enie 7 the'pin ihto the transverse slot.- Duringthis 7 normal length-then the -'d istance between the Washer and the reaf end o f-the main pOrti n of the bore in? the 111an'd1e,yis considerably reerhpi e'ssedafideterids to foreethe, handle V Henee'a 1 e1axi1i1g,,of t11e' lforwSince the (pin f 21;, 31st e ten dsinte vgroove '31 in the insulator; th spln ;1nterlo'icks the; inul'a'to'r with the handle, so that 1 the twitori otate i'Ogethetf and so that the po-' sitioni of-the, pin with: respect to the sQQket shell det'erminesf the positionfefth'e two c0nrduetors 13 and 14. fVVhen thepin isfjeeated in; the slotenlargement 28, these conductors Till-e in .the positiqn" 01f Fig.5 5 ith their forward 1 e ds, t relspectiyelyf:fengaging' the s e my;

lamp bulh ,termh lals 2" ahdf f and hence lc losvl Ioweazeii when theqhandleisjrota-ted' to seat .,facilitatesgboth;the; mztpufacturehhd the e win g io mysso et-a ic r q ir he ;;'a,1ixi1 iai'y feeteningeelenient fer, holding the e s' Q-Lfll perts in prqper relatien tOIjOne-zm-2 6 5 1" er, whilerhave ill u'jstl ate'cl aIidTde b d E IiYT-in L"i lffil i mbfl t i e elu ing 1 1 1791 sgd mbl ;jd s,,- i 11 tpucti -h and al l a ngemeint, Ikdo 1 not wv -ishgto b limif d f0 ij he eiv i e ha ges might, bb-g, 10 1 with the base of .thef lamp bulb-Fahd. having more: r a war y a '2 circum e nt l k e-freer; shd t r a P ir; Q sp e Y1 the"; pin DQ131161 companionenlargement, 32," ilthe; insulator is, rotated I a quarter; r turn, b ing -ngithe I' WQE on d i-wi ep f' t Qn- ,:'s ho;wn-;in dott'ed lines in jEigIfG" or rdut'; (if

erigagement with "thefgla'mp bulbterminals and l henqe. epeningf the circuit. Hence I eeded switching, action witjh"v a j io usly be mede. Without clep'aJ-rtihgQeither V I fromthefsmnt of mylinve tionpnifromthe 201 I '5 hapd1e hayinge; boreextending iptpit'from -1ts=fbrWard enda'ndfentered bythe rean endi 9 th eid: he1 -;-a.b y emb e pr e f ns wrifix di to-t elslh fr 125' @151 to the two cend iuctors and .e x-,

tending throughthe handle, a pin fast on the handle and extending transversely of the handle into the bore thereof through the said circumferentialslot and intothe groove in the insulator, and spring means interposed between the handle and the insulator for pressing the insulator forwardly; the

I said spring means comprising a washer bearing against the rear end of the insulator and having apair of spaced perforations through which the wires respectively extend, and a compression spring disposed within the handle behind the washer.

2. For use with a lamp bulb having a basal terminal, a lamp socket including a shell interlocked with the lamp bulb against relative rotation and provided with a circumferential slot, an insulator rotatable'within the shell and having a lateral recess, a circuit terminal carried by the insulator and movable into and out of contact with the said basal terminal by a partial'rotation of the insulator, a hollow handle member rotatable on the shell and including a pin projecting radially, inward of the handle member throughthe circumferential slot in the shell handle member and retainedtherein by engagement with the pin, and a washer interthe handle has a metal tube liningits bore and through which the pin extends; and in:

which the insulating means comprise a washer slidable within the said lining and bearing against the rear end of the insulator and through which'washer the wires extend,

'and a compressionspring interposed be-' tween the washer and a more rearward por-' tion of the handle. 7

4. A lamp socket as per claim 2, in

the spring is spiral and adapted to be twisted past the pin when inserting the spring the handle, and in which the washer has a peripheral recess adapted to clear the pin so as to permit the insertion of the washer past the pin into the handle.

. Signed at Chicago, Illinols,

WILLI M'LEsoI-IMAN;

Nov-ember7th, 

